Ciosny [ˈt͡ɕɔsnɨ] is a village in the administrative district of Gmina Wiśniew, within Siedlce County, Masovian Voivodeship, in east-central Poland. It lies approximately 3 kilometres (2 mi) east of Wiśniew, 12 km (7 mi) south of Siedlce, and 93 km (58 mi) east of Warsaw.